The principle used in a musket was just like the principle behind cannon which is why muskets were also called mini canons. As it was difficult for a soldier to measure the amount of powder to be poured down the barrel, it was supplied in a pre-measured pouch that had to be torn apart by the soldier before every shot.
The approx distance between Heathrow and Gatwick Airport in a straight line is 29 miles or 46.66 KMS See the maps and links below for additional information related to driving distances, fuel costs and estimated journey times for this trip from Heathrow to Gatwick Airport.Happy trails!!Advertisements:f you were travelling in a mid range car that averaged 40 MPG and were paying Â£6.36 per gallon (1.40 per litre) for your petrol then the cost for this trip based on an estimated driving distance of 35.38 miles (56.93 kms) , from Heathrow to Gatwick Airport for your fuel would be in the region of Â£5.63.
Cheapest Transport Heathrow-Gatwick Airport. - The cheapest way to travel between Gatwick and Heathrow Airports is not direct, most options involve going into Central London but there are exceptions. - Expect a travel time of a minimum of 3 hours or more, comparing to an hour direct.atwick-London St Pancras (Thameslink Trains). As option 4, the Heathrow London Underground service is the cheapest option between Heathrow Airport and Central London.